Printing Quality-Related Trouble - Epson AcuLaser CX11 Service Manual

EPSON AcuLaser CX11/CX11F

3.4.5 Printing Quality-related Trouble

Perform troubleshooting for print quality troubles following the flow chart below.
START
Make a sample test print
No
Is there an applicable FIP?
Yes
Perform the appropriate troubleshooting
No
Trouble restored?
Yes
END
Figure 3-4. Printing-quality troubleshooting Entry Chart
The printing-quality troubleshooting described here is based on a condition that the
printer controller has no problems.
However, making a test print with only the engine side, allows you to find out roughly
which side (controller side or engine side) is causing the trouble, except for cases that
cannot be checked by the test print.
Test print with the engine alone is normal
Test print on engine alone is abnormal
If the probable cause is "printer controller trouble," replace with a normal printer
controller and interface cable, and check.
If the trouble recurs after replacing with the normal parts, check on the host side, and
use the printer quality FIPs to perform efficient troubleshooting.
TROUBLESHOOTING
Replace Photoconductor Unit and
FUSER ASSY in that order
No
Trouble restored?
Yes
END
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